Point patterns of tree distribution determined by habitat heterogeneity and dispersal limitation.

Oecologia
Yi-Ching LinI-Fang Sun

Abstract

Understanding processes underlying spatial distribution of tree species is fundamental to studying species coexistence and diversity. This study modeled point patterns of tree distribution, expressed by Cartesian coordinates of individual trees within a mapped forest stand, for the purpose of identifying processes that may generate spatial patterns of tree communities. We used four primary point pattern processes (homogeneous Poisson process, inhomogeneous Poisson process, homogeneous Thomas process, and inhomogeneous Thomas process) to model tree distribution in two stem-mapped forests in Taiwan, Republic of China. These four models simulate spatial processes of habitat association and seed dispersal, allowing us to evaluate the potential contribution of habitat heterogeneity and dispersal limitation to the formation of spatial patterns of tree species. The results showed that the inhomogeneous Thomas process was the best fit model and described most of the species studied, suggesting that spatial patterns of tree species might be formed by the joint effects of habitat associations and dispersal limitation. The homogeneous Thomas process that models the effect of dispersal limitation was the second best model. We also found th...Continue Reading

References

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Citations

Jun 5, 2015·Journal of the Royal Statistical Society. Series B, Statistical Methodology·Yongtao GuanRasmus Waagepetersen
Aug 4, 2015·Nature·Emily G MitchellNicholas J Butterfield
Jan 27, 2019·International Journal of Environmental Research and Public Health·Zhiyong ZhangYanshu Liu
Mar 9, 2020·Environmental Science and Pollution Research International·Heng RenWen-Zhi Zhao
May 12, 2018·International Journal of Environmental Research and Public Health·Jiankang Liu, Kebin Zhang
Jul 10, 2020·Interface Focus·Emily G MitchellDmitriy V Grazhdankin

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